Engineering Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

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Engineering Interview Questions

Questions Answers Views Company eMail

For a centrifugal pump if the pump is running and we close the discharge valve what is the effect

Asian Paints, NFTDC, Reliance,

11 53281

What is the diffrence between four strock and two strock ic engine

Alkem Labs, Mechanical,

14 23906

how vfd drives energy save

PowerTech,

5 10590

in slip ring motor if motor specification is given how we calculate its rotor resistance in starting

1 4985

If single phase voltage level is 230V than why three phase voltage level is not 660V ?, but it is only 440V.

BSNL, DOS, EFS, HMT, L&T, TCS, ThyssenKrupp,

16 75255

how much percentage(%) of load can feed in power transformer?

Siemens,

1 8721

Sir, I hav applied for the post of sec. engg in RRB in telecom-sigal domain. Can u suggest hows the question pattern. Do I hav 2 follow technical books or general aptitude books ?

BSNL,

2 5611

expalanation for 5p10 class.

6 23501

how to check the earth resistance value& what is the minimum earth resistance for good earthing sysytem.

Brookfield, BSNL, DMRC, Epoch, KPTCL, Polycab, Power Control, SIEA, Siemens, Wipro,

33 155155

WAT IS MEANT BY COLD AND HOT START OF A MOTOR?? HOW DOES IT AFFECT A MOTOR'S PERFORMANCE??

4 57468

assemblies in .net

2063

how much amp MCB is required for 1/2 kva power back up?

Havells,

2 9480

Why 11KV PT Secondaries [(11000/1.732)/(110/1.732)/ (110 / 3)]are in star connection ? And why the same should not be in delta ?

1 6296

pls, send me jindal steels & power aptitude ques

1914

pls ,send me technical questions of jindal steels and power ltd

Jindal,

2265

Un-Answered Questions { Engineering }

what is the transmission loss for electrical supply? specifically a large shopping complex where the grid is half KM away, what will the % of transmission loss? is there any transmission loss for captive unit generation for above set? thanks

1998

where i can get soil testing report for construction in aurangabad.

3189

List the chemical names which are used in washing plant?

Why do we use distinct polarisation (UL-H:DL-V) while uplinking and downlinking rather than same (UL-H:DL-H)?

1958

Do you know what is water softening?

What is critcal speed. what is resonant frequency. why we want to cross crtcal speed on higher RPM (early).

2166

Is it possible to use a S1 duty class motor for crane application (S4)? If not, why?

2469

what is meant by class 1 E in electrical power supply?

2130

WHAT WII BE THE WATER ABSORPTION POWER OF WOOD ?

2241

How to calculate loses in transformer of 160 KVA ?

1678

How can one quickly estimate the additional pressure drop to be introduced with more tube passes?

1088

Explain what cmos is and its benefits?

1121

If the rated speed of a d.c. Shunt motor is1440 r.p.m, which method of speed control would you suggested to obtain a speed of 1500 r.p.m?

1171

DCS marshaling Cabinet Power supply can be replace during plant running time? Answer Yes it is possible. I am talking about the controller and cards power supply modules. They are always redundant and connected through diode so that if one power supply fails the other can take the charge immediately.so it is possible to replace one of them in running plant if the other one is healthy. MY question is how switching done.

1024

Where can I get CPWD electrical specifications & Shedule of rates? Please help me

2276

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